Table 2.

Unadjusted medical costs in patients with cognitive impairment with and without delirium

	Patient cohort with delirium Mean±SD (JPY) per patient	Patient cohort without delirium Mean±SD (JPY) per patient
N	39 836	257 764
Total	979 907.7±871 366.4	816 137.0±794 745.9
Hospitalisation cost	528 760.0±351 385.0	445 497.1±347 548.9
Surgical cost	277 683.9±576 399.4	231 177.1±511 700.1
Inspection cost	66 846.6±90 615.6	54 202.6±49 425.2
Drug cost	53 420.9±159 390.4	41 097.3±182 713.4
Imaging cost	35 129.7±31 289.1	29 423.4±29 107.7
Treatment cost	16 951.5±72 122.6	13 843.1±84 341.6
Dispensary cost	1115.2±926.6	896.3±1036.2

JPY, Japanese yen; N, number of patients.